HELP! I have a 93 Dakota with a 3.9 v6. A few days ago the truck would not start. Problem got worse so I changed fuel pump and filter. Truck will run for 20 seconds or so then die. I have changed fuel pump relay and auto shutdown relay, crankshaft sensor, distributor cap, rotary button, ignition module and coil. When the truck dies there is no spark and fuel pump turns off. I don't know what else to do, any idea?

 

 

Any codes?

 

i finally got lucky. i found a corroded broken wire in the wiring harness going to the fuse box where the fuel pump and asd relays are. Look for 3 red wires soldered into 1 red wire about 6 inches from the fuse box.